33. The bill must be paid at once by us

34. English is spoken by many people in the world.

35. John said to me that he didn't know what Fred was doing.

36. Do you mind if I borrowed your paper?

37. It's important to keep the environment clean.

38. I'm very sad to be unaccepted in that group.

39. Do you know the man talking to Tom?

40. A new bridge built only two years ago has been declared unsafe.

I.

33. The bill must be paid at once.

→ câu bị động dạng động từ khiếm khuyết: S + must/should/can... + be + V3/ed + (by+O)

34. English is spoken in the world by many people .

→ câu bị động thì HTĐ: S + is/am/are + V3/ed + (by+O)

35. John said to me he didn't know what Fred was doing.

→ S + said to + O (that) + S + V(lùi thì)

36. Do you mind if I borrow your paper?

→ Do you mind + if + S + V0: Bạn có phiền nếu ...

II.

37. It's important to keep the environment clean.

→ S + Vbe + Adj + to_V

38. I'm very sad to be unaccepted in that group.

39. Do you know the man talking to Tom?

→ rút gọn MĐQH ( bỏ 'who' và Vbe )

40. A new bridge built only two years ago has been declared unsafe.

→ rút gọn MĐQH ( bỏ 'which' và Vbe )

@ $quynhly$